Priming-cup for internal-combustion engines.



L. A. POVASKI.

PRIMING CUP FOR INTERNAL comausnow ENGINES.

APPLICATION FILED JULY 22, 1915.

1 1 76,85 1 Patented Mar. 28, 1916.

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LEO A. POVASKI, OF SAULT STE. MARIE, MICHIGAN.

PRIMING-CUP FOR INTERNAL-COMBUSTION ENGINES.

Specification of Letters Patent.

Patented Mar. 28, 1916.

Application filed July 22, 1915. 7 Serial No. 41,327.

. '1 0 all whom, it may concern:

Be it known that I, Lno A. PQVASKI, a citizen of the United States, residing at Sault Ste. Marie, in the county of Chippewa and State of Michigan, have invented certain new and useful Improvements in Priming- Cups for Internal-Combustion Engines, of which the following is a specification.

The present invention relates to a priming cup for internal combustion engines, and has for its object to provide a device of this character which embodies novel featuresof construction 1 whereby the engine may be quickly primed at any time without the necessity of manually manipulating a valve.

Further objects of the invention are 'to provide a priming cup which is comparatively simple and inexpensive in its construction, which can be used interchangeably with the ordinary priming cups, which admitsof the engine being quickly primed from an ordinary gasolene can, and which is so constructed as to prevent accumulations of dust or carbon upon the valve seat.

WVith these and other objects in view, the invention consists in certain novel combinations and arrangements of the parts as will more fully appear as the description proceeds, the novel features thereof being pointed out in the appended claims.

' For a full understanding of the invention, reference is to be had to the following description and accompanying drawing, in which v Figure 1 is a side elevation of a priming cup for internal combustion engines, constructed in accordance with the invention. Fig. 2 is a vertical sectional view through the same, a gasolene can, and the manner of opening the valve therewith, being shown in dotted lines.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawings by the same reference characters.

Specifically describing the present embodiment of the invention, the reference character 1 designates a tubular stock which has one end thereof threaded at 2 so as to be screwed into the usual opening of the cylinder head, and is closed at the opposite end. An offset barrel 3 is provided upon one side of the tubular stock 1 and is preferably integral therewith. The bore of the barrel is shown as parallel to the opening of the tubular stock 1 and is closed at its lower end by a removable plug 4. A by-pass 5 establishes communication between the upper end of the tubular stock 1 and the upper end of the barrel 3, the end of the bypass being normally closed by a check valve 6 which is slidably mounted within the barrehand normally closes an inlet opening i in the upper end thereof. A cup 8 proects upwardly from the barrel 3 and communicates at the bottom thereof with the inlet opening 7, so that when the valve is open, gasolene within the cup will flow through the tubular stock 1 into the engine. The upper end of the valve 6 is formed with astem 9 which normally projects upwardly through the inlet opening 7, the extremity of the stem being concave at 9 so as to be easily engaged by the nozzle of a gasolene can A. At the base of the stem 9 the valve 6 is formed with a tapered or frusto-conical shoulder 6 which engages a correspondingly shaped valve seat 10 at the upper end of the barrel 3. Interposed between the lower end of the valve 6 and the removable plug 4: is a coil spring 11 which normally holds the valve yieldably against its seat, the end of the valve then closing the inlet opening '7, while the side thereof extends across and closes the by-pass 5.

In order to prime the engine, the nozzle of the gasolene can A is placed in engagement wlth the concave seat 9 at the extremity of the valve stem 9 and the valve 6 pushed downwardly against the action of the spring 11, until the inlet opening 7 is opened and the valve moved to a point be yond the by-pass 5. Gasolene from the can A will then flow readily through the bypass 5 into the tubular stock 1, and thence into the engine cylinder. As soon as the gasolene can is removed the spring 11 will again force the valve 6 into a closed position, and there is no need for manually manipulating the valve or paying any special attention thereto. When the engine is in operation neither the suction nor the explosions have any effect on the valve seat, and there is no opportunity for carbon or other foreign matter to accumulate upon the valve seat. Each time the engine is primed the charge of gasolene flows around the valve seat and the tapered end of the valve so as to thoroughly cleanse the same, and an accurate and tight seating of the valve is thereby assured at all times. Should it be necessary at any time to remove the valve,

this can be readily accomplished by first unscrewing the plug 4. In drilling the bypass 5 an opening is formed in one side of the stock 1, and this opening is shown as permanently closed by a plug 12. a c

Having thus described the. invention, What I claim as new and desire to secure by Letters Patent, is

1. A priming cup for internal combustion engines, including a tubular stock, a barrel having an inlet opening in one end thereof and communicating with the tubular stock through a by-pass at one side thereof, and a spring seated valve slidably mounted within the barrel, one end of the valve closing the inlet opening of the barrel, while the bypass is closed by one side of the valve.

2. A priming cup for internal combustion engines, including a tubular stock, a barrel having an inlet opening in one end thereof and communicating with the tubular stock through a lateral by-pass, a taperedvalve seat being provided around the inlet opening, and a spring seated slide valve mounted within the barrel, one end of the slide valve being tapered for cooperation with the valve seat to close the inlet opening, and the sides of the valve serving to close the byass. p 3. A priming cup for internal combustion engines, including a tubular stock, a barrel having an inlet opening at one end thereoflet opening, and a spring seated valve slidably mounted Within thebarrel, one end of the valve being formed with a stem to enter the inletiopemngand a tapered portion for cooperation with the valve seat, while the bypass is closed by the sides of the valve.

5. A primingcup for internal combustion engines, including a tubular stock, an offset barrel arranged at one side of the tubular.

stock and parallel thereto, a by-pass being provided which establishes communication between the barrel and the tubular stock, and one end of the barrel being formed with an inlet opening and a valve seat surrounding the same, and a spring seated valve slidably mounted within the'barrel, one end of the valve being constructed for cooperation with the valve seat to close the inlet opening while thesid'es of the valve serve to .close the 'by-pass;

6. A priming cup for internal combustion engines, including a tubular stock, an offset barrel parallel to the tubular stock and arranged at one side thereof, a lateral by-pass being provided which establishes communication betweenthe barrel and the tubular stock, one'end-of the barrel being formed with an inlet opening and atapered valve seat surrounding the same, a valve slidably mounted within the barrel and having one end thereof tapered for cooperation with the valve seat, while thesides of the valve serve to close the by-pass, the tapered end of the valve being formed with a stem which passes through the inlet opening for engagement with the nozzle of a gasolene can, and a spring holding the valve yieldably upon its seat.

In testimony whereof I affix my signature in the presence of two witnesses' LEO A; PovAsKi;

Witnesses JOHN A. MADIGAN, JAMES A. MCDONALD.

Copies of this patent may be obtainedforfive cents each, by addressingitthe Commissioner of Patents,

Washington,D.-G. 

